Finding the Fourth Proportional to 88,128.12, 132,323.38 and 35,640.12

Step by Step Solution

1. Step 1: Write the proportion equation
   88,128.12 : 132,323.38 = 35,640.12 : x
2. Step 2: Convert to fraction form
   88,128.12/132,323.38 = 35,640.12/x
3. Step 3: Cross multiply
   88,128.12x = 132,323.38 × 35,640.12
4. Step 4: Simplify right side
   88,128.12x = 4,716,021,142.01
5. Step 5: Solve for x
   x = 4,716,021,142.01/88,128.12
6. Step 6: Final answer
   x = 53,513.24